Question

A CloudOps engineer needs to build a CloudWatch dashboard showing memory utilization and disk space usage for a fleet of EC2 Linux instances. After creating the dashboard, they discover that only CPU, network, and disk I/O metrics are available in the CloudWatch console, but no memory or disk-space-used metrics appear. What is the correct way to make these metrics available?

Accepted Answer

Install and configure the CloudWatch agent on the instances to collect memory and disk metrics and publish them as custom metrics

Answer

Enable detailed monitoring on the EC2 instances to reduce the metric interval to 1 minute

Answer

Attach an IAM role with CloudWatchReadOnlyAccess so the console can display the hypervisor-level memory metrics

Answer

Create a CloudWatch metric filter on the instances' system logs to extract memory and disk usage values